Being taxed on the same income in two countries is one of the most common and costly problems facing globally mobile professionals. When you earn in one country and are tax resident in another, both can lay claim to that income. India's Foreign Tax Credit (FTC) mechanism exists to resolve exactly this, letting you offset tax already paid overseas against your Indian tax liability so you are not taxed twice on the same earnings.

This guidebook explains how FTC works in India in plain terms, built around real assignment scenarios: an Indian professional seconded to the US and later returning home, and a German expat repatriating after a four-year India assignment. It sets out who qualifies for FTC, the residency conditions that make your global income taxable in India, and the documentation you need to support a claim.

At the centre of every FTC claim is Form 67, the online statement of foreign income and taxes. The guide covers what must accompany it, how and where it is filed on the Income-tax e-filing portal, and the deadlines that apply to original, belated, revised and updated returns. It also flags the practical checkpoints that trip up expats and mobility teams, from keeping bank accounts and digital signatures active after repatriation to the fact that Form 67 currently cannot be revised once submitted.

Crucially, the guide addresses what happens when the deadline is missed. Drawing on the Kolkata Tribunal ruling in Rahul Anand vs. ADIT and a line of similar cases, it explains why courts have increasingly treated Form 67 as a procedural rather than mandatory requirement, holding that the right to claim FTC and treaty protections take precedence over a late filing where substantive compliance is met.

Written for Indians working abroad, inbound expats and mobility professionals, this is a practical reference for claiming FTC correctly, avoiding disputes, and protecting the credit even when timelines slip.